111112201012122 has 48 divisors (see below), whose sum is σ = 244691423508480. Its totient is φ = 36429974791200.

The previous prime is 111112201012037. The next prime is 111112201012123. The reversal of 111112201012122 is 221210102211111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111112201012095 and 111112201012104.

It is not an unprimeable number, because it can be changed into a prime (111112201012123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217578279 + ... + 218088357.

It is an arithmetic number, because the mean of its divisors is an integer number (5097737989760).

Almost surely, 2^{111112201012122} is an apocalyptic number.

111112201012122 is an abundant number, since it is smaller than the sum of its proper divisors (133579222496358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111112201012122 is a wasteful number, since it uses less digits than its factorization.

111112201012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708539 (or 708536 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111112201012122 its reverse (221210102211111), we get a palindrome (332322303223233).

The spelling of 111112201012122 in words is "one hundred eleven trillion, one hundred twelve billion, two hundred one million, twelve thousand, one hundred twenty-two".